Q. Extrusion of second polar body from egg nucleus occurs :
A) after entry of sperm but before fertilization
B) after fertilization
C) before entry of sperm into ovum
D) simultaneously with first cleavage
Explanation
[Solution] Sperm entry triggers completion of meiosis II and release of the second polar body, before fusion of nuclei. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.